Home / 3,947.08-5,909.10-3,117.64

Finding the Fourth Proportional to 3,947.08, 5,909.10 and 3,117.64

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Solution

The fourth proportional to 3,947.08, 5,909.10 and 3,117.64 is: 4,667.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.08 : 5,909.10 = 3,117.64 : x
  2. Step 2: Convert to fraction form
    3,947.08/5,909.10 = 3,117.64/x
  3. Step 3: Cross multiply
    3,947.08x = 5,909.10 × 3,117.64
  4. Step 4: Simplify right side
    3,947.08x = 18,422,446.52
  5. Step 5: Solve for x
    x = 18,422,446.52/3,947.08
  6. Step 6: Final answer
    x = 4,667.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.